potato skin mash.

I dont make a mash but I do boil the potato skins off and give the hens these. 

They love them!

i feed my girls on spud peelings you will need to boil them first them mash it up and i mix layers mash then you know they are getting all the vitamins they need 

In deference to Defra, I prepare all my veg outside so any scraps do not come from the kitchen (yeah right...)

My girls have their pellets all day and also have any fruit and veg peelings plus the odd scrap of bread crust plus any other (non-meat) leftovers in the afternoon.  I put all the peelings into a plastic box and feed it as is, unless there are spud peelings in the box in which case I have discovered that I can microwave the lot in a few minutes.

I just let it cool, but don't chop it up or mash it - they have great fun grabbing a strip of carrot peel & racing off, pursued by the others (even though there are plenty of other carrot strips - duh....).

Because my girls are in a big run & not fully free-ranging, I use these scraps & any weeds pulled up in the garden to bring free-ranging to them.  They can't tell the difference in value of treats - they can't tell if it's catering by-products or purchased grain that they are getting as a treat - although they do get grain too.  As far as the chickens are concerned, if it's not a pellet from the feeder, it's a treat.